The million dollar question! I really get peeved when asked this question especially when it comes with that disbelieving look and exclamation " You mean you really don't believe there is a God?" Not forgetting that very annoying question "What happened to make you not believe in God?". Why assume something terrible must have happened for one to lose "faith" or not have faith at all? Well, the terrible thing that happened was I actually read the bible! And the good news is, reading the bible and other 'holy' books turned me into an Atheist!